title: Ultrastructure of pig pinealocytes in various stages of the sexual cycle: a quantitative study.
abstract: Relative volumes of mitochondria (MIT), lysosomes (LYS), Golgi profiles (GP), granular endoplasmic reticulum (GER), membrane bound bodies of type 1 (MBB 1) and type 2 (MBB 2), and the number of dense-core vesicles (DCV), were counted in pinealocytes of female sexually immature pigs, in animals in oestrus and in nursing pigs. Relative volumes of GER, LYS, MBB I and the number of DCV changed in the different stages of the sexual cycle. The highest volumes of GER, LYS and MBB 1 were observed in pigs in oestrus. Pinealocytes of sexually immature pigs were characterized by a considerably higher number of DCV in comparison with mature animals.
authors.affiliation: Department of Histology and Embryology, Agricultural and Technical Academy, Olsztyn, Poland.
authors.forename: B
authors.initials: B
authors.lastname: Przybylska
authors.forename: Z
authors.initials: Z
authors.lastname: Wyrzykowski
authors.forename: K
authors.initials: K
authors.lastname: Wyrzykowska
authors.forename: M
authors.initials: M
authors.lastname: Karasek
mesh_terms: D000375:Aging / Q000502:physiology; D000818:Animals; D004971:Estrus / Q000502:physiology; D005260:Female; D007774:Lactation / Q000502:physiology; D010870:Pineal Gland / Q000502:physiology / Q000648:ultrastructure*; D012098:Reproduction / Q000502:physiology*; D012741:Sexual Maturation / Q000502:physiology; D013552:Swine / Q000033:anatomy & histology* / Q000502:physiology